In January, NASA announced it would no longer service the Hubble Space Telescope -- a decision that would doom the popular observatory to a quiet death in orbit.
The decision was so unpopular that Congress asked the National Academy of Sciences to review it. In a round of meetings that wrapped up today, the academy committee struggled to weigh two very different risks: the risk of sending another space shuttle to Hubble versus the risk of sending an untried robot to do the job. NPR's Richard Harris reports.
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